Advertisement

Thermophysics and Aeromechanics

, Volume 25, Issue 1, pp 47–54 | Cite as

Experimental investigation of the limits of ethanol combustion in the boundary layer behind an obstacle

  • B. F. Boyarshinov
Article
  • 9 Downloads

Abstract

Experimental data on the flow structure and mass transfer near the boundaries of the region existence of the laminar and turbulent boundary layers with combustion are considered. These data include the results of in-vestigation on reacting flow stability at mixed convection, mass transfer during ethanol evaporation “on the floor” and “on the ceiling”, when the flame surface curves to form the large-scale cellular structures. It is shown with the help of the PIV equipment that when Rayleigh–Taylor instability manifests, the mushroom-like structures are formed, where the motion from the flame front to the wall and back alternates. The cellular flame exists in a narrow range of velocities from 0.55 to 0.65 m/s, and mass transfer is three times higher than its level in the standard laminar boundary layer.

Keywords

flame blow-off mixed convection combustion “on the ceiling” PIV method Rayleigh−Taylor instability mushroom-like structures 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    S.I. Isaev, I.A. Kozhinov, V.I. Kofanov, and A.I. Leontiev, Theory of Heat and Mass Transfer, A.I. Leontiev (Ed.), Vysshaya Shkola, Moscow, 1979.Google Scholar
  2. 2.
    M.F. Blair, Influence of free-stream turbulence on turbulent boundary layer heat transfer and mean profile development, Part II–Analysis of results, J. Heat Transf., 1983, Vol. 105, No. 1, P. 41–47.CrossRefGoogle Scholar
  3. 3.
    B.F. Boyarshinov, Obstacle influence on the flow structure and mass transfer in a boundary layer with ethanol combustion on horizontal surface, Thermophysics and Aeromechanics, 2013, Vol. 20, No. 6, P. 695–704.ADSCrossRefGoogle Scholar
  4. 4.
    B.F. Boyarshinov and S.Yu. Fedorov, Heat and mass transfer and stabilization of combustion in the boundary layer behind a rib and a backward-facing step, Combustion, Explosion and Shock Waves, 2013, Vol. 49, No. 5, P. 507–511.CrossRefGoogle Scholar
  5. 5.
    B.F. Boyarshinov, On the boundaries of the transitional regime of mass transfer during ethanol combustion on horizontal rear walls of a rib and a step, Combustion, Explosion and Shock Waves, 2015, Vol. 51, No. 4, P. 401–408.CrossRefGoogle Scholar
  6. 6.
    B.S. Petukhov and A.F. Polyakov, Heat Transfer at Mixed Turbulent Convection, Nauka, Moscow, 1986.Google Scholar
  7. 7.
    B.F. Boyarshinov, Analysis of experimental data on heat and mass transfer in a boundary layer, Combustion, Explosion and Shock Waves, 1998, Vol. 34, No. 2, P. 183–190.CrossRefGoogle Scholar
  8. 8.
    V.I. Zapryagaev, N.P. Kiselev, and A.A. Pavlov, Effect of streamline curvature on intensity of streamwise vortices in the mixing layer of supersonic jets, J. Appl. Mech. Tech. Phys., 2004, Vol. 45, No. 3, P. 335–343.ADSCrossRefGoogle Scholar
  9. 9.
    P.D. McCormack, H. Welker, and M. Kelleher, Taylor-Goertler vortices and their effect on heat transfer, J. Heat Transf., 1970, Vol. 92, No. 1, P. 101–112.CrossRefGoogle Scholar
  10. 10.
    L. Orloff and J. De Ris, Modeling of ceiling fires, 13th Symp. (Int.) on Combustion, Comb. Inst., 1971, P. 979–990.Google Scholar
  11. 11.
    L. Orloff and J. De Ris, Cellular and turbulent ceiling fires, Combustion and Flame, 1972, Vol. 18, P. 18–389.CrossRefGoogle Scholar
  12. 12.
    B. Lewis and G. von Elbe, Combustion, Flame, and Explosions of Gases, Academic Press, New York, 1961.Google Scholar
  13. 13.
    R.Kh. Abdrakhmanov, B.F. Boyarshinov, and S.Yu. Fedorov, Investigation of the local parameters of a cellular propane/butane/air flame, Int. J. Heat and Mass Transfer, 2017, Vol. 109, P. 109–1172.CrossRefGoogle Scholar
  14. 14.
    M. Van Dyke, An Album of Fluid Motion, The Parabolic Press, Stanford, California, 1982.Google Scholar
  15. 15.
    N.A. Inogamov, A.Yu. Demianov, and E.E. Son, Hydrodynamics of Mixing, MIPT, Moscow, 1999.Google Scholar
  16. 16.
    C.E. Wooldridge and R.J. Muzzy, Measurements in the turbulent boundary layer with porous wall injection and combustion, Tenth Symp. (Int.) on Combustion (The Combust. Inst., Pittsburgh), 1965, P. 1351–1362.Google Scholar
  17. 17.
    J.W. Jones, L.I. Isaacson, and S. Vreekes, A turbulent boundary layer with mass addition, combustion, and pressure gradients, AIAA J., 1971, Vol. 9, No. 9, P. 1762–1768.Google Scholar
  18. 18.
    L. Talbot, R.K. Cheng, R.W. Schefer, and D.R. Willis, Thermophoresis of particles in a heated boundary layer, J. Fluid Mech., 1980, Vol. 101, part 4, P. 737–758.ADSCrossRefGoogle Scholar
  19. 19.
    S. Suzuki, K. Kuwana, and R. Dobashi, Effect of particle morphology on thermophoretic velocity of aggregated soot particles, Int. J. Heat and Mass Transfer, 2009, Vol. 52, P. 52–4695.CrossRefGoogle Scholar
  20. 20.
    T. Ota and H.A. Nishiyama, correlation of maximum turbulent heat transfer coefficient in reattachment flow region, Int. J. Heat and Mass Transfer, 1987, Vol. 30, No. 6, P. 1193–1199.CrossRefGoogle Scholar
  21. 21.
    Y. Zhang, M.J. Bustamante, M.J. Gollner, P.B. Sunderland, and J.G. Quintiere, Burning on flat wicks at various orientations, J. Fire Sci., 2014, Vol. 32, No. 1, P. 52–71.CrossRefGoogle Scholar
  22. 22.
    M.J. Gollner, X. Huang, A.S. Rangwala, and F.A. Williams, Effects of inclination on upward flame spread, in: Fall Technical Meeting of the Western States Section of Combustion Institute, October 16-18, 2011, P. 648–657.Google Scholar
  23. 23.
    Certificate of Authorship 1270588 USSR, cl. G-01 K 17/02, Method for determining the heat flux components and device for its implementation, B.F. Boyarshinov, E.P. Volchkov, V.I. Terekhov, V.I. Titkov, Discoveries. Inventions, 1986, No. 42.Google Scholar

Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  1. 1.Kutateladze Institute of Thermophysics SB RASNovosibirskRussia

Personalised recommendations